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Tom Herbison
24 followers -
Tom Herbison MI0IOU
Tom Herbison MI0IOU

24 followers
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Setting up a Raspberry Pi WSPR Station
In some of previous posts, I've discussed how it is possible to generate RF directly from the Raspberry Pi using the clock pin, and I've also mentioned the excellent LPF kits for the Raspberry Pi available from  Language Spy . In this post, I'm going to bri...

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Using a Bluetooth keyuboard with the Raspberry Pi
Bluetooth is really useful for wirelessly connecting peripherals to your Raspberry Pi. I wanted to use a bluetooth keyboard with my Raspberry Pi, but to do this, first of all I needed a Bluetooth adapter like the one shown below, which is available from Cut...

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Using PiFM to transmit audio on any frequency up to 250 MHz
The first "hack" which allowed experimenters to use the Raspberry Pi's clock pin (GPIO 4) to transmit audio directly from the Raspberry Pi came from the Imperial College Robotics Society  . Their "PiFM" module has since been modified and improved and is now...

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Generating Radio Frequencies using the "Clock" pin GPIO 4
After many months of being busy with work, and more recently demonstrating the Raspberry Pi Wobbulator at radio rallies in Ireland and England, I have finally had the chance to return to doing what I enjoy most - experimenting with the Raspberry Pi. It has ...

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Say "Hello" to the Raspberry Pi model B+
The Raspberry Pi Foundation have just announced the launch of the new Raspberry Pi model B+! I was lucky enough to get my hands on one of the pre-production models and I've written a review of the new Raspberry Pi B+ on  DESIGNSPARK

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Back to Basics...
The Raspberry Pi Wobbulator has evolved and now has many new features including X and Y scales and a continuoius sweep option. The latest version 2.7.1 has just been uploaded to the Yahoo group . For those potential users new to Linux and the Raspberry Pi I...

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Setting up and Testing the Raspberry Pi Wobbulator - Part 3
With my Raspberry Pi Wobbulator powered up and ready for action the first task I decided to give it was to examine the frequency response characteristics of an RF crystal. If this sounds familiar, then it is because it is. I performed the same test using th...

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Setting up and Testing the Raspberry Pi Wobbulator - Part 2
Before downloading and running the RPi Wobbulator software, there are a couple of small adjustments that need to be made to the Raspberry Pi hardware, and the following adjustment procedure will also serve as a check that the hardware is working as it shoul...

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Setting up and Testing the Raspberry Pi Wobbulator - Part 1
Now you've built the Raspberry Pi Wobbulator kit it's time to check that it is working as it should! The ADC chip on the RPi Wobbulator uses the I2C protocol to communicate with the Raspberry Pi, but I2C is not enabled by default on the Raspberry Pi,  so if...
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